JPH0123743Y2 - - Google Patents
Info
- Publication number
- JPH0123743Y2 JPH0123743Y2 JP1984094190U JP9419084U JPH0123743Y2 JP H0123743 Y2 JPH0123743 Y2 JP H0123743Y2 JP 1984094190 U JP1984094190 U JP 1984094190U JP 9419084 U JP9419084 U JP 9419084U JP H0123743 Y2 JPH0123743 Y2 JP H0123743Y2
- Authority
- JP
- Japan
- Prior art keywords
- pipe handle
- diameter
- hammer
- tip
- fitted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 241000251131 Sphyrna Species 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Percussive Tools And Related Accessories (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は片手ハンマーなど、各種ハンマーに関
するもので、特に金属製のパイプ柄を有するハン
マーのハンマーヘツドとパンプ柄との取付部分の
構造に関するものである。[Detailed description of the invention] [Field of industrial application] The present invention relates to various hammers such as one-handed hammers, and in particular to the structure of the attachment part between the hammer head and pump handle of a hammer having a metal pipe handle. It is.
従来、片手ハンマーなどでは木製の柄が多く利
用されている。このようなものではハンマーヘツ
ドと柄の固定手段として、ハンマーヘツドの取付
孔に挿入された柄の先端に楔を打ち込むのが普通
である。ハンマーヘツドの脱落を防止するため、
取付孔の奥径を広くして楔を打ち込む思想（実開
昭51−153884号）も知られている。
Traditionally, wooden handles have often been used for one-handed hammers. In such devices, the means for fixing the hammerhead and handle is usually to drive a wedge into the tip of the handle inserted into the attachment hole of the hammerhead. To prevent the hammer head from falling off,
Another idea is to widen the back diameter of the mounting hole and drive a wedge into it (Utility Model Application No. 51-153884).
近年、パイプ柄ハンマーと称し、柄をステンレ
スパンプや軽合金パイプといつた金属製のパイプ
とするものが案出されている。この、パイプ柄ハ
ンマーでは従来の楔の思想を応用することができ
ないため、第５図に示すようにパイプ柄Ａの先端
部をハンマーヘツドＢの取付孔に単に圧入（無理
嵌め）するか、圧入した上でパイプ柄とハンマー
ヘツドとにピンＤを貫通させていた。 In recent years, a hammer with a handle made of metal, such as a stainless steel pump or a light alloy pipe, has been devised, called a pipe handle hammer. Since the conventional wedge concept cannot be applied to this pipe handle hammer, the tip of the pipe handle A is simply press-fitted (forcibly fitted) into the mounting hole of the hammer head B, as shown in Figure 5, or press-fitted. Then, pin D was passed through the pipe handle and hammer head.
楔によるハンマーヘツドの固定は、柄材料の弾
性変形で密嵌状態を維持しようとするものである
が、楔面に対する反力によつて楔が押し出されガ
タ付きを生じ易い。
When fixing the hammerhead with a wedge, the attempt is made to maintain a close fit through elastic deformation of the handle material, but the wedge is likely to be pushed out by the reaction force against the wedge surface, resulting in looseness.
パイプ柄ハンマーにおいても、従来のものは長
期の衝撃的な使用の繰返しによつてハンマーヘツ
ドが脱落したり、例えピンによつて固定されてい
てもガタ付きを生じる可能性があつた。 In conventional pipe-handled hammers, there is a possibility that the hammer head may fall off due to repeated impactful use over a long period of time, or that the hammer head may become loose even if it is fixed with a pin.
その上ハンマーヘツドとパイプ柄とにピンを貫
通させる場合は、余分な加工を必要とし、能率的
に製造することができなかつた。 Furthermore, when the pin passes through the hammer head and the pipe handle, extra machining is required, making it impossible to manufacture efficiently.
このような点に鑑み、本考案はより確実にパイ
プ柄とハンマーヘツドとを固定し得るとともに、
能率的に製造し得るパイプ柄ハンマーを得ること
を目的とするものである。 In view of these points, the present invention can more reliably fix the pipe handle and the hammer head, and
The object is to obtain a pipe handle hammer that can be manufactured efficiently.
ハンマーヘツドに穿設される取付孔は、パイプ
柄挿入側を細径部２ａに、先方側を大径部２ｂと
する。そして、取付孔２に挿入した金属製である
パイプ柄３の先端部にパイプ柄３の先端部内径よ
りも大径の鋼球４を圧入し、パイプ柄先端部が取
付孔２の内面に密嵌状態となるべく拡径させる。
The attachment hole drilled in the hammer head has a small diameter part 2a on the pipe handle insertion side and a large diameter part 2b on the forward side. Then, a steel ball 4 having a larger diameter than the inner diameter of the tip of the pipe handle 3 is press-fitted into the tip of the metal pipe handle 3 inserted into the mounting hole 2, so that the tip of the pipe handle is tightly sealed against the inner surface of the attachment hole 2. Expand the diameter as much as possible to make it fit.
〔作用〕
ハンマーヘツドの取付孔に挿入されたパイプ柄
の先端に鋼球を圧入して行くと、パイプ柄の先端
部は拡径され塑性変形によつて取付孔内面に密嵌
状態となる。[Operation] When a steel ball is press-fitted into the tip of the pipe handle inserted into the attachment hole of the hammerhead, the diameter of the tip of the pipe handle expands and becomes tightly fitted into the inner surface of the attachment hole due to plastic deformation.
この密嵌状態は、金属であるパイプ柄自体の塑
性変形によるとともに、変形自体がパイプ柄内の
鋼球によつて維持されるため、ハンマーヘツドが
パイプ柄の先方へ移動して脱落したり、ガタ付く
可能性がなくなる。 This tightly fitted state is due to the plastic deformation of the metal pipe handle itself, and the deformation itself is maintained by the steel balls within the pipe handle, so the hammer head will not move to the tip of the pipe handle and fall off. Eliminates the possibility of wobbling.
次に本考案の実施例を添付の図面に基づいて説
明する。
Next, embodiments of the present invention will be described based on the accompanying drawings.
第１図に示すパイプ柄ハンマーは、パイプ柄自
体を先細のテーパ状とするもので、第２図は組み
立て前の状態を示す断面図である。 The pipe handle hammer shown in FIG. 1 has a pipe handle itself in a tapered shape, and FIG. 2 is a sectional view showing the state before assembly.
第２図に示すように、ハンマーヘツド１の取付
孔２はパイプ柄の挿入側を内径D1の細径部２ａ
に、先方側を内径D2の大径部２ｂとする。これ
に対し、パイプ柄３の先端部外径D3を取付孔の
内径D1よりもやや大径（例えば0.5mm程度）とし、
パイプ柄自体を取付孔２に無理嵌めとなるように
圧入する。つまり、取付孔２に圧入されたパイプ
柄は、外径がほゞD1にまで絞り込まれた状態と
なる。パイプ柄３の先端部には面取り３ａを施
し、取付孔に圧入し易いようにしている。 As shown in Fig. 2, the mounting hole 2 of the hammer head 1 has a narrow diameter part 2a with an inner diameter D1 on the insertion side of the pipe handle.
In this case, the front side is the large diameter portion 2b with an inner diameter D2 . On the other hand, the outer diameter D 3 of the tip of the pipe handle 3 is made slightly larger than the inner diameter D 1 of the mounting hole (for example, about 0.5 mm),
The pipe handle itself is press-fitted into the mounting hole 2 so as to be force-fitted. In other words, the pipe handle press-fitted into the mounting hole 2 has an outer diameter reduced to approximately D1 . The tip of the pipe handle 3 is chamfered 3a so that it can be easily press-fitted into the mounting hole.
貫通孔とした取付孔２に圧入されたパイプ柄３
には、先端から直径D4の鋼球４を圧入する。鋼
球４の直径D4は少なくとも取付孔に圧入され、
絞り込まれたパイプ柄の内径よりも大径とし、か
つ圧入によつて拡径されたパイプ柄の外周面が取
付孔の大径部２ｂ内周面に密接する大きさに選定
する。この鋼球４は高硬度のものであつて、かつ
寸法的に正確なものとするのが好ましく、例えば
ボールベアリング用の鋼球を応用することができ
る。 A pipe handle 3 press-fitted into a through-hole mounting hole 2
A steel ball 4 with a diameter of D 4 is press-fitted from the tip. The diameter D 4 of the steel ball 4 is press-fitted into at least the mounting hole,
The diameter is larger than the inner diameter of the narrowed pipe handle, and the size is selected so that the outer circumferential surface of the pipe handle whose diameter has been expanded by press-fitting comes into close contact with the inner circumferential surface of the large diameter portion 2b of the attachment hole. This steel ball 4 is preferably of high hardness and dimensionally accurate, and for example, a steel ball for ball bearings can be used.
なお、パイプ柄３の外径D3は取付孔の細径部
D1よりも必ずしも大径とする必要はないが、な
るべく密嵌状態となるようにするのが好ましい。 In addition, the outer diameter D 3 of the pipe handle 3 is the narrow diameter part of the mounting hole.
Although it is not necessarily necessary to make the diameter larger than D 1 , it is preferable to make it as tightly fitted as possible.
第１図、第２図に示す実施例では、ハンマーヘ
ツドの取付孔２を貫通孔とし、先方の開放端より
鋼球を圧入する実施例を示しているが、取孔孔は
第３図、第４図に示すように盲孔としてもよい。 In the embodiment shown in FIGS. 1 and 2, the mounting hole 2 of the hammerhead is a through hole, and a steel ball is press-fitted from the open end of the hammerhead. It may also be a blind hole as shown in FIG.
この場合、盲孔である取付孔２′の先方側、す
なわち内奥を大径部２b′、開放側を細径部２a′と
し、大径部に予め鋼球を位置させておく。取付孔
２′の開放端からパイプ柄の先端部を圧入して行
くと、パイプ柄自体は絞り込まれると同時に、先
端部においては鋼球によつて拡径され、一工程で
しつかりと固定させることができる。 In this case, the front side of the blind mounting hole 2', that is, the innermost part, is the large diameter part 2b', and the open side is the small diameter part 2a', and a steel ball is placed in the large diameter part in advance. When the tip of the pipe handle is press-fitted from the open end of the mounting hole 2', the pipe handle itself is narrowed down, and at the same time, the diameter of the tip is expanded by the steel ball, making it firmly fixed in one step. be able to.
ハンマーヘツドに穿設する取付孔２，２′は、
図示実施例において段付きの孔としているが、細
径部から大径部へ次第に内径が変化するテーパ孔
とすることもできる。 The mounting holes 2 and 2' drilled in the hammer head are
In the illustrated embodiment, the hole is stepped, but it may also be a tapered hole in which the inner diameter gradually changes from a small diameter portion to a large diameter portion.
その他図面において、５は合成樹脂製の保護リ
ングである。 In other drawings, 5 is a protective ring made of synthetic resin.
本考案パイプ柄ハンマーによれば、従来のパイ
プ柄ハンマーに比較してハンマーヘツドとパイプ
柄とをより強固に固定することができる。
According to the pipe handle hammer of the present invention, the hammer head and the pipe handle can be fixed more firmly than the conventional pipe handle hammer.
従来のパイプ柄ハンマーのように、取付孔にパ
イプ柄を圧入するだけであつても、当初は十分に
固定される。しかしながら、長期間のしかも繰り
返えしの使用によつてガタ付きを生じる。これに
対し、本考案ではパイプ柄の内部に鋼球が圧入さ
れた状態で固定されているため、少なくとも内面
が鋼球と接する部分ではパイプ柄自体にガタ付き
の原因となる変形を生じる余地がなく、確実に密
嵌状態を維持することができる。 Even if the pipe handle is simply press-fitted into the mounting hole like a conventional pipe handle hammer, it is sufficiently fixed at the beginning. However, after long-term and repeated use, it becomes loose. On the other hand, in the present invention, the steel ball is press-fitted into the pipe handle and fixed, so there is no room for deformation of the pipe handle itself, which may cause wobbling, at least in the area where the inner surface contacts the steel ball. It is possible to reliably maintain a tightly fitted state.
また、本考案ではパイプ柄に鋼球を圧入するだ
けで加工が容易であるとともに、鋼球を圧入する
場合、鋼球とパイプ柄内面との接触はごく小さな
面積で接触しているため圧入力が効率的に作用
し、比較的小さな圧力でより強力な圧入、塑性変
形の効果を得ることができる。 In addition, with this invention, processing is easy by simply press-fitting the steel ball into the pipe handle, and when press-fitting the steel ball, the contact between the steel ball and the inner surface of the pipe handle is over a very small area, so the pressing force is works efficiently, allowing stronger press-fitting and plastic deformation effects to be obtained with relatively small pressure.
添付図面の第１図ないし第４図は本考案パイプ
柄ハンマーの実施例を示すもので、第１図は一部
を切欠して示す全体の正面図、第２図は分離させ
て示すハンマーヘツド部分のみの縦断面図、第３
図は別の実施例を示すハンマーヘツド部分のみの
縦断面図、第４図は第３図の実施例のハンマーヘ
ツドのみの縦断面図、第５図は従来のパイプ柄ハ
ンマーの一例を示すハンマーヘツド部分のみの縦
断面図、である。
１……ハンマーヘツド、２……取付孔、２ａ…
…細径部、２ｂ……大径部、３……パイプ柄、４
……鋼球。
Figures 1 to 4 of the accompanying drawings show an embodiment of the pipe-handled hammer of the present invention, with Figure 1 being an overall front view with a portion cut away, and Figure 2 showing the hammer head separated. Partial longitudinal sectional view, 3rd
The figure is a vertical sectional view of only the hammer head portion showing another embodiment, FIG. 4 is a vertical sectional view of only the hammer head of the embodiment of FIG. 3, and FIG. 5 is a hammer showing an example of a conventional pipe-handled hammer. FIG. 3 is a vertical sectional view of only the head portion. 1...Hammer head, 2...Mounting hole, 2a...
...Small diameter part, 2b...Large diameter part, 3...Pipe handle, 4
……wrecking ball.
Claims (1)
柄挿入側を細径部２ａに、先方側を大径部２ｂと
し、取付孔２に挿入した金属製であるパイプ柄３
の先端部にパイプ柄３の先端部内径よりも大径の
鋼球４を圧入し、パイプ柄先端部が取付孔２の内
面に密嵌状態となるべく拡径せしめたことを特徴
とするパイプ柄ハンマー。 A pipe handle 3 made of metal is inserted into the attachment hole 2, with the pipe handle insertion side of the attachment hole 2 drilled in the hammer head 1 having a small diameter portion 2a and the front side having a large diameter portion 2b.
A pipe handle characterized in that a steel ball 4 having a larger diameter than the inner diameter of the tip of the pipe handle 3 is press-fitted into the tip of the pipe handle 3 to enlarge the diameter of the pipe handle so that the tip fits tightly into the inner surface of the mounting hole 2. hammer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9419084U JPS619277U (en) | 1984-06-22 | 1984-06-22 | Pipe handle hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9419084U JPS619277U (en) | 1984-06-22 | 1984-06-22 | Pipe handle hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS619277U JPS619277U (en) | 1986-01-20 |
| JPH0123743Y2 true JPH0123743Y2 (en) | 1989-07-20 |
Family
ID=30652530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9419084U Granted JPS619277U (en) | 1984-06-22 | 1984-06-22 | Pipe handle hammer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS619277U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0426224Y2 (en) * | 1986-12-03 | 1992-06-24 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036752U (en) * | 1973-07-27 | 1975-04-17 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51153884U (en) * | 1975-06-02 | 1976-12-08 |
-
1984
- 1984-06-22 JP JP9419084U patent/JPS619277U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036752U (en) * | 1973-07-27 | 1975-04-17 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS619277U (en) | 1986-01-20 |
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